As per the prior post's analogy it seems I am still shaking the BIAB C4 versus C5 dust off in that I was not 100% sure if I had actually tested the output frequency the BIAB notation is producing. So this time I did a test but I documented it in my reminder database so that a few years from now I do not forget and have to waste time testing it again (it was a challenge because I had to select the correct midi instrument to get the tuner to pick up the sound). Here it is.

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To test the actual pitch that Band in a box (BIAB) is sounding see the notes text box of this calendar entry. The result of the test is this this. When you enter notes in the Band In A Box notation window the notes actually do sound at the correct pitches where middle C sounds as ISO C4 at frequency 261.626. The confusion occurs because BIAB reports this incorrectly as C5 in three places (In its notation window, in its Vocal Wizard and in its guitar tuner).

Procedure:
Run the NCH Perfect Pitch Software on the asus machine. We know for sure this software works on the "International Standardization Organization (ISO)" music pitches table scientific notation standard where C4 is middle C at frequency 261.626 .

Plug the computer mike into the asus machine mike in plug. This plug is on top of the asus machine on the left side. The right side is the headset output.

Place the computer mike inside the main machine logitech bass speaker sound hole. This is the machine that BIAB is running on.

On the main machine run the BIAB song file Test_BIAB_Notation_ActualPitch.MGU

This BIAB file has 2 bars of middle C4 and 2 bars of middle D4 written in the midi melody.

Make sure the midi instrument is set to Instrument 5 electric piano. If you use vibes the NCH software does not pick up the signal. The piano sounds similar to a fender rhodes.

In BIAB highlight the 4 bars and press f10 to play the notes over and over in a loop.

When you run this the NCH tuner reports that
the note written in the middle C position of the staff does in fact sound as ISO C4 at frequency 261.626.
the note written just above at D4 does sound correctly as ISO D4 at frequency 293.665.


Last edited by bowlesj; 12/21/20 12:19 PM.
John Bowles
My playing in my 20s:
https://www.reverbnation.com/johnbowles